New ring-modulator for Digisound-80 designed/built

Kevin Lightner majmoog at
Thu Jan 2 21:56:27 CET 1997

>Hi All,
>For those that are interested, over Xmas I finalised the design for a
>dual-ring-modulator for the Digisound-80 synth. The design is at the top
>of this web page:
>I'd be interested in any comments. I haven't done too much testing on it
>(apart from actually making weird noises etc.) so I don't know things like
>noise specs, distortion figures etc. but who cares about them anyway! ;-)
>Being a Digisound module, it runs off a +/- 15v supply....

Digisound also used SG3402 ring mod chips in at least one of their modules.

It runs off of a single supply as well.

I love looking at guitar players play through a RM for the first
time...It's so funny to watch them attempt to play in tune!!!


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